Protesters against Trump’s political rise gathered outside the performing arts center Tuesday, ahead of his rally. Daylight marches calling for voters to “Dump Trump” had seemingly set the tone for a peaceful day of demonstration.

The riots in Albuquerque erupted on a day when the billionaire businessman took another step towards the GOP nomination by winning the Washington state primary.

The last remaining Republican candidate, Trump is expected to reach the 1,237 delegate count during the next round of primaries in California, New Mexico, New Jersey, Montana and South Dakota. He has already claimed 1,196 delegates.